Question

In my initialize method I am trying to write it so I can pass either a hash or a yaml object to init the attribute values.

My yaml file looks like:

defaults: &defaults
  host: localhost
  port: 4565
  timeout: 3


development:
  <<: *defaults

test:
  <<: *defaults

staging:
  <<: *defaults

production:
  <<: *defaults

I currently have this:

def initialize(options)

  if options.respond_to? "has_key" && options.has_key? "defaults"
    config = options["defaults"]
  else
    config = options
  end

  @hostname = config[:hostname]
  @port = config[:port]
  @timeout = config[:timeout]

end

This is currently not working for me, I’m getting this error:

unexpected tSTRING_BEG, expecting keyword_then or ';' or '\n'
      if options.respond_to? "has_key" && options.has_key? "defaults"

1. How can I load the correct environment also? (test, development, production)
2. How can I throw an error if one of the keys isn’t present? (or say at least the major ones that I need for sure like hostname, port)

Answer 1

You need to parenthesize your if statement.

if options.respond_to?("has_key") && options.has_key?("defaults")